Onomatopoeia
Pronunciation : On`o*mat`o*poe"ia
Part of Speech : n.
Etymology : [L., fr. Gr. (Philol.)
Definition : Defn: The formation of words in imitation of sounds; a figure of speech in which the sound of a word is imitative of the sound of the thing which the word represents; as, the buzz of bees; the hiss of a goose; the crackle of fire.
Note: It has been maintained by some philologist that all primary words, especially names, were formed by imitation of natural sounds.
Source : Webster's Unabridged Dictionary, 1913